When one considers heat flow in a monoatomic ideal gas at the local equilibrium state then the heat flux's direct proportionality to the pressure gradient becomes an inherent property of the system.Abdulmuhsen H. AliKuwait UniversityJournal of Thermophysics & Heat Transfer...
The density, ρ, of air, or any other gas, is given simply by the mass of the gas divided by the volume it occupies: ρ=mV Where ρ = density of gas, kg/m3 m = mass of gas in a given volume V = volume occupied The ideal gas law, presented with Eqn. 9.4 in the previous ch...
N/V and so from this description we arrive at the ideal gas law: P = R T N/V Pressure is "caused" by thermal energy of the particles. At equilibrium if Pressure is pushing on a wall, and the wall is not moving, something must be pushing back. The equilibrium value of Pressure is...
The geometry used for the derivation of the radiation patterns of a rigid piston mounted on a flat, rigid baffle of infinite extent. Ds is an infinitesimal piston area whose vibration produces sound in the field point B. The total acoustic pressure P(r,θ,t) at B is found by integrating...
"Derivation of some basic properties of ideal gases and solutions from processes of elastic collisions",Journal of Chemical Education, Vol 55 (6), pp. 369-371, June (1978). Links: http://www.schulphysik.de/thermodyn.html The Blind Men and the Elephant ...
Work in stages and pay attention to the units of the measurements. When dealing with a mixture of gases above a liquid, the concentration of the gas is equal to the partial pressure of that gas. References University of Illinois at Urbana-Champaign; Derivation of Thermodynamic Equations; A. ...
The Clausius-Clapeyron equation is a derivation of this formula. It describes the relationship between the vapor pressure and the temperature of a liquid. It's accurate for the phase transition between liquid and gas (vaporization) or solid and gas (sublimation). When there is a big difference...
j The number average molecular weight of oligomer (MoLG) in the liquid phase containing EG and water excluding undissolved TPA is estimated by MoLG=- - - -20-0-0-/)·w-o-L-G···-·--·-· (41) /)C 1 +0HV[l-/)(wEG+wH 2o)J The derivation of eq 41 is given in ...
Errors in radiosonde pressure or temperature measurements will imply corresponding errors in calculated geopotential heights, causing measured ozone concentrations to be assigned to incorrect altitudes and pressures. This is potentially an important issue for the derivation of trends, as radiosonde changes ma...
The gas within the gun is assumed ideal, with pressure Pg and temperature ϑg related by the ideal gas law(6)PgVg=MgRϑg,where Vg is the gas volume within the gun, Mg the mass of gas, and R is the specific gas constant. The time derivative of the eos (6) gives an equation ...